Thanks, would have been a good option, could have taken the scenic route! As it was I massively underestimated how long it would take to leave the house with two kids in tow, only got to Bury at 8:30 and now stuck on A14 going nowhere on the way back to London…
There's an old railway line trail which runs from Sudbury, Suffolk to the edge of Long Melford which would be quite good.
Edit : You're using the A14 to Bury so my suggestion would be out of your way